Monitor



FIG. 1 is a front perspective view of a monitor showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof; and,

FIG. 4 is a left side view thereof.

The broken line showing of various regions in FIGS. 1–4 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a monitor, as shown and described. 